encode_poly()

static Data__Geometry* encode_poly ( struct geobuf_agg_context *  ctx, LWPOLY *  lwpoly  )

static

Definition at line 299 of file geobuf.c.

References geobuf_agg_context::dimensions, encode_coords(), galloc(), POINTARRAY::npoints, LWPOLY::nrings, and LWPOLY::rings.

Referenced by encode_geometry().

{
        int i, len, nrings, offset;
        POINTARRAY *pa;
        Data__Geometry *geometry;
        uint32_t *lengths;
        int64_t *coords = NULL;

        geometry = galloc(DATA__GEOMETRY__TYPE__POLYGON);

        nrings = lwpoly->nrings;

        if (nrings == 0)
                return geometry;

        lengths = palloc (sizeof (uint32_t) * nrings);

        offset = 0;
        for (i = 0; i < nrings; i++) {
                pa = lwpoly->rings[i];
                len = pa->npoints - 1;
                coords = encode_coords(ctx, pa, coords, len, offset);
                offset += len * ctx->dimensions;
                lengths[i] = len;
        }

        if (nrings > 1) {
                geometry->n_lengths = nrings;
                geometry->lengths = lengths;
        }

        geometry->n_coords = offset;
        geometry->coords = coords;

        return geometry;
}

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